Control mechanism for firing guns.



H.1AKOBSSON. CNTRL MECHANISM FOR FIHING GUNS. APPUCATION HLED FEB. 28| 1917- 1,293,104;. Patented Feb. 1919.

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mtormeyA Hf IAKOBSSON. comRoL MECHANISM FoR HRING Guns.

nve ntor:

rmarr f/ a/assor Attorney.

Patented Feb.-4,1919.

2 SHEETS-SHEET 2 Mll/Qw AEPUCATION FILED FEB. 28| |917.

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CONTROL MECHANISM FOR FIRIN' G GUNS.

Specification of Letters Patent.

Patented Feb. 4, 1919.

Application filed February 28, 1917. Serial No. 151,408.

To all lwhom t may concern Be it known that I, HERMAN JAKoBssoN, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Control Mechanism for Firing Guns, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specication.

In the manipulation of guns it is customary to provide for the operator a shoulder brace adapted to rest against the shoulder iece which the operatorgrasps with one hand while with the other hand he manipulates the tiring handle for actuating the trigger controlling the firing mechanism. It is obviously diiHcult to provide a shoulder piece or handle of such character that it will be conveniently positioned at any elevation of the gun varying from below horizontal to nearly vertical. The object of my invention is to provide a shoulder piece which is adjustable, or has an adjustable part, whereby the relation of the shoulder piece to the gun may be varied with the guns elevation and whereby the handle on the shoulder piece may be at substantially the, same position relatively to the operators seat regardless of the elevation of the gun.

A preferred embodiment of the inventionis shown in the accompanying drawings, in which,-

Figure l is an elevation of a gun and carriage with parts broken away.

Fig. 2 is an enlarged fragmentary view of the connection between the shoulder piece and the arms forming guides for the firing handle.

Fig. 3 is a section on the line 3-3 of Fig. 2.

a is one of the wheels of the gun carriage. is the trail carrying a seat (not shown) for the operator. c is one of the trunnions about which the gun d is swung to adjust its angle of elevation in a yoke g which is mounted with its vertical pivot in a socket L, rigidly secured on fthe trail b. Both elevating and traversing of the gun is accomplished by the gunner through the shifting of the shoulder up and down or sidewise, while pressing it against the shoulder piece.

f the gun is of a heavy type, it may be secured during the rin by clamps y', or any other suitable well l2lcuown means. e

A1s adjustable in the direction `104. The plates are piece 104, together is the recoil cylinder. f is the breech block carrying the ring mechanism, the details oi which are not shown, which is actuated by means of the firing handle 100, the latter being slida'bly mounted on the two arms 101 secured to a non-recoiling portion of the carriage. The rear ends of the arms terminate in a plate 102 of T shape in cross-section, .the curved rear arms 103 of the T fitting engaging within a curved tubular member 104 forming the shoulder piece. The shoulder piece, provided with a longitudinal slot 109, of its length along the plate 102 and is held in its adjusted position by means of clamping plates 105 on opposite sides of the mam arm of the plate 102, the plates 105 having flanges 106 litting against the outside of the tube held in position by means of a clamping bolt 107 extending through them and the main arm of plate 102, which is for that purpose threaded in one of the clamping lates 105. To tighten the clamping bolt 10 its head is provided with either a fixed or detachable handle 110. Secured to the ends of the shoulder piece 104 are handles 108, one or the other of which, dependent upon the angle of elevation of the gun, is firmly grasped by the operator with one hand, while'with the other hand he manipulates the sliding firing handle 100. The handles 108 also form abutments limiting the sliding movement of the shoulder piece upon plate 102. The shoulder with the coacting plates 108 and 106, are curved in the arc of'a circle whose center is approximately the axis upon which the gun swings.

When the gun is depressed to about a substantially horizontal position or, as shown in the broken lines slightly below a horizontal position, the shoulder piece is adjusted to its lowermost position on its supporting arms, the operator grasping the lower handle 108. When the gun is elevated to approximately the position shown in the broken lines y, the shoulder piece is adjusted to its uppermost position, as shown by the broken lines a, and the operator grasps the upper handle 108. It will be evident that when the gun is elevated to this extreme angle or angles approaching the same, the gunner will be unable to press his shoulder against the shoulder piece 104, but that the shoulder piece and the upper handle at that time together serve as a lever to move the into the desired position and that Y they clamping handle 7' then comes into play for retaining the lgunin elevation The positions and y represent the extreme limits v of depression and elevation.

understood that the shoulder piece may' be n. 'adjusted to any intermediate position that will be best adapted tothe angle .of eleva;l

' tion of the gun.

lIn `order to soften the blow against the mans shoulder vUnion lrng the gun, a .enshioning device is provided on the shoulder rest.A This may preferably be` made of rubber or other elastic` material 112, which is secured yin any .Suitble manner on the outer .Surface of the tube 10i forming the shoulder rest. It has been found most practical to usea piece of' hose or rubber tire, slit v,open along its entire length andy cemented or riveted to the tube 104,

Having now f Vlly described myinvention, what I desire te -Claimand protect. by Letters Patent is: l `1.l In a 'gui-n mounting, the combination with, ,a Agun 4and trunnions .on which the gun turnable to vary its eleva-tion, of a rear- Ward-ly extending support. secured te a nonrecoili part of the gun, a shoulder piece slid- ,ably adju table arcuately on said support, means. t0. maintain said shoulderpieoe in a plurality of p-Ositi, ns. Corresponding to the various positions f elevation `of the gun, andv'handlesat opposite ends of the-shoulder `piece, whereby at widely varying gun eleyations, a handle orthe'operator may be nrevded at. .an approximately/@varying position. y 2. In a ygun mounting, the combination with a `gun and trunnions on which. the gun 40 is, turnahle to vary its elevation, of arod Gomes e! this patent may be obtained #0r It will be ing plates engaging I.main O. the T-plate and the adjacent elevating the .-gun,

. cured on extending back from `a non-recoil part of the gun, a firing handle slidable along the rod, a Tplate Vsecured to the rear of ysaid rod, a tubular shoulder piece slotted to receive the main arm of the 'T-plate and adapted to accommodate the outer arms thereof, clampopposite sides of the outer Wall of the tube, and means to clamp the clamping plates in position.v

3. In `gun mountingsy having a 4non-recoiling member provided with trunnions for elevating the gun; a shoulderzpiece,v comprising a rearwardly extending arm rigidly secured on the said member, a guide at the extreme end offsaid arm and a shoulder rest slidably mountedl around the said guide in such a manner that the shoulder res-t may be held either depending from lsaid arm or standing upright thereon, and clamping means for rigidly securing kthe shoulder rest in any one ofthe said positions.

4, In ygun meuntings having a non-recoil ing member provided with trunnions for a shoulder rest compris ing a rearwardly extending; rigidly sethejsaid member, an arcuate guide at the extreme e'nd'o said arm and ashoulder rest 'Inovably` mounted on the said guide in such a, mannerthat the shoulder rrest may beheld either depending v:from said arm or standing `upright hereon and clamping means for rigidly securing the said shoulder rest in any intermediary position between the said eXtreme positions.

In testimony of which invention, I have hereunto vs etnny hand, at Philadelphia, on

Y HERMAN JAKoBssoN.

this 12th day of F-ebruary,

ive eents eiwh, by addressing, thei Qommissicner of Patents,

Washington, D. G. 

